Steam-engine governor



. A. J. SOHINDLER. STEAM ENGINE GOVERNOR.

(No Model.)

Patented Nov. 24, 1891.

UNITED STATES PATENT OFFICE.

ANDREWV J. SCIIINDLER, OF CHICAGO, ILLINOIS.

STEAM-ENGINE GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 463,873, dated November24, 1891.

Application filed February 19, 1891. Serial No. 382,104. (No model.)

To all whom it may concern:

Be it known that I, ANDREW J. SOHINDLER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Steam-Engine Governors,of which the following is a full, clear, and exact description, thatwill enable others to make and use the same, reference being had to theaccompanying drawings, forming a part of this specification.

This invention relates to improvements in the class of centrifugal orshaft governors; and it consists of certain novel features in theconstruction, arrangement, and operation of the same, as will behereinafter set forth.

This improvement is adapted to be used in connection with the differenttypes of steamengines, either double or single, and will handle a doubleengine with one eccentric, dispensing with the link or hook motion. Thethrow of the eccentric may be varied automatically or set stationary andaltered by hand in accordance with the style of engine and the work tobe done. By this arrangement the ordinary friction or slide valve may beactuated with the same facility and ease as a balance or rotary valve.

In the drawings, Figure 1 is an elevation, the crank or engine-shaftbeing in section; Fig. 2, a transverse section on line 2, Fig. 1,looking in the direction indicated by the arrow; Fig. 3, an elevation ofthe eccentric, showing the opposite side from that illustrated in Fig.1; Fig. 4:, a detached plan of the eccentric adj usting-plate.

Referring to the drawings, A represents the crank-shaft of the engine, Ba disk rigidly mounted thereon, and C the eccentric. The eccentric ispivotally secured to the disk B by means of the pin or bolt D passingthrough the aperture a, Fig. 3, and the adj Listing-plate E, recessed inthe carrying-disk, as shown in Fig. 2. The pivot-pin D, on which theeccentric swings, passes through the same at one side and is set on aline diametrically opposite the engine-crank, and is therefore always inposition for running the engine in either direction.

The carrying-disk B is provided with the elongated slot a, Fig. 2, inwhich is set the adjusting-plate E. Sufficient space is leftbetween thesides of the plate and the inclosing walls of the slot to permit of theplate being moved in the direction of or away from the center line ofthe crankshaft, and thereby impart a corresponding movement to theeccentric across the face of the disk to alter the throw of the same,and thereby vary the lead and cushion accordingly. The plate E isprovided with the flange a which overlaps the surface of the disksurrounding the slot (1. and is adj ustably clamped in place by thetap-bolts a a passing through the slots a a and having a threadedengagement in the disk. This provides for the locking of the plate atthe desired point.

The shifting-pin of boltF is rigidly secured in the eccentric at a pointdiametrically opposite the pivot-pin through aperture a and, inconnection with the weighted levers shown, illustrates one of the meansthat may be employed in imparting an automatic action to the eccentric,as the varying service of the engine may require.

The carrying-disk is provided with the curved slot 1), through which theshifting-pin F projects, and connects with one end of the eccentricshifting-lever G, the opposite end of which is pivoted at b to one endof the link 5 connecting the lever G and the weighted governor-arm I-I.One end of the reachrod 5 is also pivoted at b, the opposite end beingpivoted to the link 1)", connecting the same with the companiongovernor-arm I-I', thus providing for a simultaneous movement of thegoverning mechanism. The drawings illustrate the application of thedevice to a single-acting stationary engine running in one directiononly. The weighted arms are at their extreme outer limit, the pin Fbeing on the line of its innermost position and playing between thatpoint and the end of the slot 1), as indicated by the arrow. If thegoverning mechanism were inverted, the movement of the eccentricshifting-pin F would be in the opposite direction in the slot 1) fromthe center position in which it is shown and the motion of the enginereversed.

In applying the improvement to a doubleacting engine suitable mechanismwill be employed to instantly shift the eccentric in either direction inreversing the motion of the engine. The curved slot f provides for thethrow of the eccentric with reference to the crankshaft.

The gist of the-present invention is the feature of setting thepivot-pin of the eccentric on a line directly opposite the crank and inmoving the eccentric in or out on a straight line running through thecenterof the crankshaftin setting a valve or altering the lead. Movingthe pi vot-pin outwardly increases the lead, and inwardly the reverse.By this arrangement no matter at What point the steam is cut off thelead is always the same.

In using this improved arrangement on stationary engines the automaticshifting of the eccentric may be dispensed with and the pivot-pin madeto act as a clamping-bolt and rigidly fasten the eccentric to thecarrying,

disk. The lead on the valve is changed by moving the eccentric in or outin a straight line, just the same as when the clamping-bolt is apivot-pin. Thus the lead may be conveniently changed in accordance withthe work of the engine. It will be observed that this arrangementpossesses many advantages over the ordinary eccentric mounted on thecrank-shaft.

cl represents the usual tension-spring, one end of which is attached tothe reach-rod and the other to the tension-adj usting bolt d, fastenedto the disk B by the tap-bolt g.

Having thus described my invention, what I claim as new, and. desire tosecure by Letters Patent, is-

1. In a steam-engine governor, the combination, with the crank-shaft, ofa carryingdisk rigidly mounted thereon and an eccentric adj ustablysecured to said disk and adapted to be moved in a straight line acrosssaid shaft to alter the throw of the eccentric, whereby the lead on thevalve is the same, no matter in which direction the crank-shaft isturning, substantially as described.

2. In a steam-engine, the combination, with the crank-shaft, of acarrying-disk rigidly mounted thereon, the eccentric loosely encirclingsaid shaft, the pivot-pin or boltadjustably securing the eccentric tosaid disk, said pin or bolt being set on a straight line with referenceto the engine-crank, the adj ustingplate through which said pin or boltpasses and provided in the respective ends with elongated slots, and thetap-bolts inserted through said slots and fastening said plate to saiddisk, whereby the eccentric may be moved in the direction of or awayfrom the engine-shaft, and always in a straight line witlrand oppositeto the crank, substantially as described.

3. Ina steam-engine governor, the combination of the engine=shaft, thecarrying-disk rigidly mounted thereon, the eccentric loosely encirclingsaid shaft and adj ustably pivoted at a point directly opposite theenginecrank, the shifting-pin rigidly secured in said eccentric in linewith and opposite to the pivot-pin, said shifting-pin passing through acurved slot in the carrying-disk, and in which the same moves inswinging the eccentric, the lever connected to the shifting-pin, thereach-rod, the connecting link, and the weighted arms, substantially asdescribed.

ANDREIV .I. SCIIINDLER.

Witnesses:

L. M. FREEMAN, J. P. DONALSON.

